I'm experiencing the same problem after upgrading to Ventura Beta 4 (I guess it went full circle, huh). Although the schedule thing does fix it (although now I have to do it in Terminal since it's missing for some reason), I honestly don't want to have to do such. I really hope this doesn't happen again when they release the stable release (for that matter, please release it soon).

The command works, but it seems like every time I reboot the system, the process comes back on, and I have to rerun the command. Weirdly enough, once, when I left my LD on for quite a while, the process suddenly came on. I had to rerun the command, but I feel like there's some hidden schedule causing it to come on at certain times. I've checked my shutdown schedule in System Information, but it doesn't show anything. Weird.

As Ollie had mentioned, the powerd issue finally seems to have been fixed in the latest beta, thankfully.